package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.model.entity.*;
import com.atguigu.lease.model.enums.ItemType;
import com.atguigu.lease.web.admin.mapper.*;
import com.atguigu.lease.web.admin.service.*;
import com.atguigu.lease.web.admin.vo.apartment.ApartmentDetailVo;
import com.atguigu.lease.web.admin.vo.apartment.ApartmentItemVo;
import com.atguigu.lease.web.admin.vo.apartment.ApartmentQueryVo;
import com.atguigu.lease.web.admin.vo.apartment.ApartmentSubmitVo;
import com.atguigu.lease.web.admin.vo.fee.FeeValueVo;
import com.atguigu.lease.web.admin.vo.graph.GraphVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import jakarta.el.LambdaExpression;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author liubo
 * @description 针对表【apartment_info(公寓信息表)】的数据库操作Service实现
 * @createDate 2023-07-24 15:48:00
 */
@Service
public class ApartmentInfoServiceImpl extends ServiceImpl<ApartmentInfoMapper, ApartmentInfo>
        implements ApartmentInfoService {

    @Autowired
    private ApartmentFacilityService apartmentFacilityService;

    @Autowired
    private ApartmentFeeValueService apartmentFeeValueService;

    @Autowired
    private ApartmentLabelService apartmentLabelService;

    @Autowired
    private GraphInfoService graphInfoService;

    @Autowired
    private ApartmentInfoMapper apartmentInfoMapper;

    @Autowired
    private ProvinceInfoService provinceInfoService;

    @Autowired
    private CityInfoService cityInfoService;

    @Autowired
    private DistrictInfoService districtInfoService;

    @Autowired
    private FacilityInfoMapper facilityInfoMapper;

    @Autowired
    private LabelInfoMapper labelInfoMapper;

    @Autowired
    private FeeValueMapper feeValueMapper;

    @Autowired
    private GraphInfoMapper graphInfoMapper;

    @Autowired
    private RoomInfoService roomInfoService;

    @Override
    public void customerSaveOrUpdate(ApartmentSubmitVo apartmentSubmitVo) {
        // 1. 了解本次是更新还是保存
        boolean isUpdate = apartmentSubmitVo.getId() != null;

        // 进行省份，城市，区县的查询（城市和区县同理）
        ProvinceInfo provinceInfo = provinceInfoService.getById(apartmentSubmitVo.getProvinceId());
        apartmentSubmitVo.setProvinceName(provinceInfo.getName());

        CityInfo cityInfo = cityInfoService.getById(apartmentSubmitVo.getCityId());
        apartmentSubmitVo.setCityName(cityInfo.getName());

        DistrictInfo districtInfo = districtInfoService.getById(apartmentSubmitVo.getDistrictId());
        apartmentSubmitVo.setDistrictName(districtInfo.getName());

        // 保存公寓数据
        saveOrUpdate(apartmentSubmitVo);
        Long apartmentId = apartmentSubmitVo.getId();

        // 2. 如果是更新，先删除中间表（公寓标签，公寓配套，公寓杂费，图片表）
        if (isUpdate) {
            // 更新，删除中间数据
            // 公寓配套中间表
            LambdaQueryWrapper<ApartmentFacility> apartmentFacilityLambdaQueryWrapper =
                    new LambdaQueryWrapper<>();
            apartmentFacilityLambdaQueryWrapper.eq(ApartmentFacility::getApartmentId, apartmentId);
            apartmentFacilityService.remove(apartmentFacilityLambdaQueryWrapper);

            // 公寓杂费中间表
            LambdaQueryWrapper<ApartmentFeeValue> apartmentFeeValueLambdaQueryWrapper = new LambdaQueryWrapper<>();
            apartmentFeeValueLambdaQueryWrapper.eq(ApartmentFeeValue::getApartmentId, apartmentId);
            apartmentFeeValueService.remove(apartmentFeeValueLambdaQueryWrapper);

            // 公寓标签中间表
            LambdaQueryWrapper<ApartmentLabel> apartmentLabelLambdaQueryWrapper = new LambdaQueryWrapper<>();
            apartmentLabelLambdaQueryWrapper.eq(ApartmentLabel::getApartmentId, apartmentId);
            apartmentLabelService.remove(apartmentLabelLambdaQueryWrapper);

            // 公寓图片表
            LambdaQueryWrapper<GraphInfo> graphInfoLambdaQueryWrapper = new LambdaQueryWrapper<>();
            graphInfoLambdaQueryWrapper.eq(GraphInfo::getItemId, apartmentId);
            graphInfoLambdaQueryWrapper.eq(GraphInfo::getItemType, ItemType.APARTMENT);
            graphInfoService.remove(graphInfoLambdaQueryWrapper);
        }
        // 3. 保存数据[公寓数据，其他数据]
        // 保存公寓和配套中间表
        List<Long> facilityInfoIds = apartmentSubmitVo.getFacilityInfoIds();
        if (!CollectionUtils.isEmpty(facilityInfoIds)) {
            // 如果前端传入了配套id,进行批量中间表插入
            List<ApartmentFacility> apartmentFacilities = new ArrayList<>(facilityInfoIds.size());
            for (Long facilityInfoId : facilityInfoIds) {
                ApartmentFacility apartmentFacility = ApartmentFacility.builder().apartmentId(apartmentId).facilityId(facilityInfoId).build();
                apartmentFacilities.add(apartmentFacility);
            }
            apartmentFacilityService.saveBatch(apartmentFacilities);
        }

        // 保存公寓和标签中间表
        List<Long> labelIds = apartmentSubmitVo.getLabelIds();
        if (!CollectionUtils.isEmpty(labelIds)) {
            // 如果前端传入了标签id,进行批量中间表插入
            List<ApartmentLabel> apartmentLabels = new ArrayList<>(labelIds.size());
            for (Long labelId : labelIds) {
                ApartmentLabel apartmentLabel = ApartmentLabel.builder().apartmentId(apartmentId).labelId(labelId).build();
                apartmentLabels.add(apartmentLabel);
            }
            apartmentLabelService.saveBatch(apartmentLabels);
        }

        // 保存公寓和杂费中间表
        List<Long> feeValueIds = apartmentSubmitVo.getFeeValueIds();
        if (!CollectionUtils.isEmpty(feeValueIds)) {
            // 如果前端传入了标签id,进行批量中间表插入
            List<ApartmentFeeValue> apartmentFeeValues = new ArrayList<>(feeValueIds.size());
            for (Long feeValueId : feeValueIds) {
                ApartmentFeeValue apartmentFeeValue = ApartmentFeeValue.builder().apartmentId(apartmentId).feeValueId(feeValueId).build();
                apartmentFeeValues.add(apartmentFeeValue);
            }
            apartmentFeeValueService.saveBatch(apartmentFeeValues);
        }

        List<GraphVo> graphVoList = apartmentSubmitVo.getGraphVoList();
        if (!CollectionUtils.isEmpty(graphVoList)) {
            List<GraphInfo> graphInfos = new ArrayList<>();
            for (GraphVo graphVo : graphVoList) {
                GraphInfo graphInfo = new GraphInfo();
                graphInfo.setName(graphVo.getName());
                graphInfo.setUrl(graphVo.getUrl());
                graphInfo.setItemId(apartmentId);
                graphInfo.setItemType(ItemType.APARTMENT);
                graphInfos.add(graphInfo);
            }
            graphInfoService.saveBatch(graphInfos);
        }
    }

    @Override
    public void customPageItem(IPage<ApartmentItemVo> page, ApartmentQueryVo queryVo) {
        apartmentInfoMapper.customPage(page, queryVo);
    }

    @Override
    public ApartmentDetailVo customGetById(Long id) {

        // 1. 查询 id 对应的公寓详情
        ApartmentInfo apartmentInfo = getById(id);
        // 2. 查询 公寓 id 对应的配套集合
        List<FacilityInfo> facilityInfoList = facilityInfoMapper.customQueryList(id);
        // 3. 查询公寓 id 对应的标签集合
        List<LabelInfo> labelInfoList = labelInfoMapper.customQueryList(id);
        // 4. 获取公寓 id 对应的图片集合（返回 VO）
        List<GraphVo> graphVoList = graphInfoMapper.customQueryList(ItemType.APARTMENT, id);
        // 5. 查询公寓 id 对应的杂费集合
        List<FeeValueVo> feeValueVoList = feeValueMapper.customQueryList(id);
        // 6. 将结果合并到 vo 进行返回
        ApartmentDetailVo apartmentDetailVo = new ApartmentDetailVo();
        apartmentDetailVo.setFacilityInfoList(facilityInfoList);
        apartmentDetailVo.setLabelInfoList(labelInfoList);
        apartmentDetailVo.setGraphVoList(graphVoList);
        apartmentDetailVo.setFeeValueVoList(feeValueVoList);

        BeanUtils.copyProperties(apartmentInfo, apartmentDetailVo);

        return apartmentDetailVo;
    }

    @Override
    public void customRemoveById(Long id) {

        // 先查询公寓有没有房间：有提示 207
        LambdaQueryWrapper<RoomInfo> roomInfoLambdaQueryWrapper = new LambdaQueryWrapper<>();
        roomInfoLambdaQueryWrapper.eq(RoomInfo::getApartmentId, id);
        long count = roomInfoService.count(roomInfoLambdaQueryWrapper);
        if (count > 0) {
            throw new LeaseException(ResultCodeEnum.DELETE_ERROR);
        }

        // 1. 删除公寓信息
        removeById(id);
        // 2. 删除四个关系中间表
        // 删除图片 item_id item_type
        LambdaQueryWrapper<GraphInfo> graphInfoLambdaQueryWrapper = new LambdaQueryWrapper<>();
        graphInfoLambdaQueryWrapper.eq(GraphInfo::getItemId, id);
        graphInfoLambdaQueryWrapper.eq(GraphInfo::getItemType, ItemType.APARTMENT);
        graphInfoService.remove(graphInfoLambdaQueryWrapper);

        // 删除配套
        LambdaQueryWrapper<ApartmentFacility> apartmentFacilityLambdaQueryWrapper = new LambdaQueryWrapper<>();
        apartmentFacilityLambdaQueryWrapper.eq(ApartmentFacility::getApartmentId, id);
        apartmentFacilityService.remove(apartmentFacilityLambdaQueryWrapper);

        // 删除标签
        LambdaQueryWrapper<ApartmentLabel> apartmentLabelLambdaQueryWrapper = new LambdaQueryWrapper<>();
        apartmentLabelLambdaQueryWrapper.eq(ApartmentLabel::getApartmentId, id);
        apartmentLabelService.remove(apartmentLabelLambdaQueryWrapper);

        // 删除杂费
        LambdaQueryWrapper<ApartmentFeeValue> apartmentFeeValueLambdaQueryWrapper = new LambdaQueryWrapper<>();
        apartmentFeeValueLambdaQueryWrapper.eq(ApartmentFeeValue::getApartmentId, id);
        apartmentFeeValueService.remove(apartmentFeeValueLambdaQueryWrapper);
    }
}




